Finding the Fourth Proportional to 1,721.43, 2,375.61 and 975.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.43 : 2,375.61 = 975.42 : x
2. Step 2: Convert to fraction form
   1,721.43/2,375.61 = 975.42/x
3. Step 3: Cross multiply
   1,721.43x = 2,375.61 × 975.42
4. Step 4: Simplify right side
   1,721.43x = 2,317,217.51
5. Step 5: Solve for x
   x = 2,317,217.51/1,721.43
6. Step 6: Final answer
   x = 1,346.10